I have the Deco X55 Ver 1.26, recently updated to firmware 1.4.0  I have been having periodic drops in service, most noticable during video calls, where the call drops out but picks back up automatically after a few seconds. 

My ISP says they can see that the router frequently releasing the IP address and requesting a new one. 

I was not having this problem prior to the firmware update and I'm wondering if anyone else is having similar problems or has a solution.  My ISP does not offer a fixed IP for residential customers, so I have to leave the router in auto for the WAN IP or risk other issues.

Any suggestions?

Can I roll back the firmware on my 3 Deco X55 units?  I've also had significant problems with all my Google Home hardware and dropping out since the firmware update.